Ranked #1 in Markham
Based in Naperville, 15 mi away
87/100CR Score
Ranked #1 because of its Google rating and availability: 5.0★ from 48 Google reviews, open 24/7.
- 5.0★ from 48 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Best Solar Installers in Markham, IL (2026)
121 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Markham: E. Scott Ostrowski: Awesome Options for Awesome People, CR Score 87/100; 5.0★ from 48 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Solar & Energy Experts LLC, posts 24/7 hours; ranked #2 of 121.
- 13
Most-reviewed: Sunrun Solar, 822 Google reviews at 4.1★, the most of 121 ranked; ranked #13.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
121 Markham solar installers are ranked here by CR Score, from 8 published factors. 14 are open 24/7, 72 open Saturdays and 28 open Sundays, based on posted hours. The median Google rating is 4.9★ across 121 rated businesses.
Top 10 solar installers in Markham at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | E. Scott Ostrowski: Awesome Options for Awesome People | 87 | 5.0★ (48) | Naperville, 15 mi away | 24/7 | Overall |
| 2 | Solar & Energy Experts LLC | 84 | 5.0★ (41) | Cicero, 31 mi away | 24/7 | Emergencies |
| 3 | AweSun Power | 84 | 5.0★ (15) | Downers Grove, 15 mi away | 24/7 | — |
| 4 | Solar Professionals of Illinois | 83 | 4.8★ (24) | Richton Park, 8 mi away | Sat · Sun · Evenings | — |
| 5 | SUNRISE SOLAR | 83 | 4.9★ (173) | Willowbrook, 17 mi away | Sat | — |
| 6 | Triumph Solar | 82 | 5.0★ (49) | Tinley Park, 7 mi away | Sat · Evenings | — |
| 7 | JD Pro Electric Inc | 82 | 5.0★ (134) | Franklin Park, 25 mi away | 24/7 | — |
| 8 | Illinois Solar Power | 82 | 5.0★ (14) | Montgomery, 20 mi away | 24/7 | — |
| 9 | BB&C Solar Enterprises | 81 | 4.5★ (15) | Frankfort, 5 mi away | Sat · Sun · Evenings | — |
| 10 | Priority Solar Installation | 81 | 4.9★ (61) | Chicago, 13 mi away | Sat · Evenings | — |
The 121 best solar installers in Markham, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Cicero, 31 mi away
84/100CR ScoreRanked #2 because of its Google rating and availability: 5.0★ from 41 Google reviews, open 24/7.
- 5.0★ from 41 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
#3 AweSun Power
Based in Downers Grove, 15 mi away
84/100CR ScoreRanked #3 because of its Google rating and availability: 5.0★ from 15 Google reviews, open 24/7.
- 5.0★ from 15 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Richton Park, 8 mi away
83/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.8★ from 24 Google reviews, listed on Google as “Solar energy company”.
- 4.8★ from 24 Google reviews
- Hours
- Mon–Sun 9 AM–9 PM
- Address
- 4137 Sauk Trail Suite 333, Richton Park, IL 60471
Based in Willowbrook, 17 mi away
83/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 173 Google reviews, listed on Google as “Solar energy company”.
- 4.9★ from 173 Google reviews
- Hours
- Mon–Sat 9 AM–5 PM · Sun closed
- Address
- 825 75th St UNIT E, Willowbrook, IL 60527
Based in Tinley Park, 7 mi away
82/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 49 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 49 Google reviews
- Hours
- Mon–Thu 7 AM–7 PM · Fri 9 AM–7 PM · Sat 7 AM–7 PM · Sun closed
- Address
- 8527 Scheer Dr, Tinley Park, IL 60487
Based in Franklin Park, 25 mi away
82/100CR ScoreRanked #7 because of its Google rating and availability: 5.0★ from 134 Google reviews, open 24/7.
- 5.0★ from 134 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9230 Grand Ave, Franklin Park, IL 60131
Based in Montgomery, 20 mi away
82/100CR ScoreRanked #8 because of its Google rating and availability: 5.0★ from 14 Google reviews, open 24/7.
- 5.0★ from 14 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Frankfort, 5 mi away
81/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.5★ from 15 Google reviews, listed on Google as “Solar energy company”.
- 4.5★ from 15 Google reviews
- Hours
- Mon–Sun 8 AM–9 PM
Based in Chicago, 13 mi away
81/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 61 Google reviews, listed on Google as “Solar energy company”.
- 4.9★ from 61 Google reviews
- Hours
- Mon–Sat 7 AM–7 PM · Sun closed
- Address
- 7509 S Chappel Ave, Chicago, IL 60649
#11 Volt Home Pros
Based in Frankfort, 8 mi away
81/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 62 Google reviews, listed on Google as “Solar energy company”.
- 4.9★ from 62 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat 9 AM–2 PM · Sun closed
- Address
- 7777 W Lincoln Hwy Suite A, Frankfort, IL 60423
Based in Darien, 28 mi away
81/100CR ScoreRanked #12 because of its Google rating and availability: 5.0★ from 10 Google reviews, open 24/7.
- 5.0★ from 10 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
#13 Sunrun Solar
Based in Des Plaines, 31 mi away
81/100CR ScoreRanked #13 because of its Google rating and review volume: 4.1★ from 822 Google reviews, the most Google reviews on this list (822).
- 4.1★ from 822 Google reviews
- Hours
- Mon–Sun 8 AM–5 PM
- Address
- 2291 & 2309 S Mt Prospect Rd, Des Plaines, IL 60018
Based in Bolingbrook, 22 mi away
81/100CR ScoreRanked #14 because of its Google rating and availability: 5.0★ from 5 Google reviews, open 24/7.
- 5.0★ from 5 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 498 W Boughton Rd, Bolingbrook, IL 60440
#15 Adams
Based in Morris, 40 mi away
80/100CR ScoreRanked #15 because of its Google rating and availability: 4.8★ from 379 Google reviews, open 24/7.
- 4.8★ from 379 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1299 Leah Rd Suite A, Morris, IL 60450
Based in Crest Hill, 31 mi away
80/100CR ScoreRanked #16 because of its Google rating and availability: 4.8★ from 185 Google reviews, open 24/7.
- 4.8★ from 185 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
#17 WindSoleil
Based in Chicago, 20 mi away
80/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 72 Google reviews, listed on Google as “Solar energy company”.
- 4.9★ from 72 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat 8 AM–4 PM · Sun closed
- Address
- 401 N Trumbull Ave # D, Chicago, IL 60624
#18 Smart Sky Solar
Based in Schaumburg, 38 mi away
80/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 46 Google reviews, listed on Google as “Solar energy company”.
- 4.9★ from 46 Google reviews
- Hours
- Mon–Sat 8 AM–8 PM · Sun 8 AM–5 PM
- Address
- 1901 N Roselle Rd Suit 800, Schaumburg, IL 60195
#19 GreenGrids
Based in Shorewood, 29 mi away
80/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.7★ from 33 Google reviews, listed on Google as “Solar energy company”.
- 4.7★ from 33 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 21403 Somerset St, Shorewood, IL 60404
Based in Chicago, 28 mi away
79/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 18 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3152 W Devon Ave APT 2D, Chicago, IL 60659
#21 1Earth Solar
Based in Joliet, 23 mi away
79/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 13 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 2108 McDonough St, Joliet, IL 60436
Based in Western Springs, 18 mi away
79/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 8 Google reviews
- Hours
- Mon–Sun 8 AM–6 PM
- Address
- 4736 Grand Ave, Western Springs, IL 60558
Based in Bensenville, 31 mi away
79/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.8★ from 715 Google reviews, listed on Google as “Solar energy system service”.
- 4.8★ from 715 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 1270 Mark St, Bensenville, IL 60106
#24 Those Solar Guys
Based in Midlothian, 4 mi away
78/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 4 Google reviews
- Hours
- Mon–Sun 9 AM–10 PM
- Address
- 5705 W Midlothian Turnpike, Midlothian, IL 60445
Based in Skokie, 30 mi away
78/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 50 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 50 Google reviews
- Hours
- Mon–Sat 8 AM–5 PM · Sun closed
- Address
- 4939 Oakton St, Skokie, IL 60077
Solar installers ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 121 ranked solar installers here; the rest are on their profiles.
Also serving Markham
20 more solar installers within 40 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| ACSS Energy | 5.0★ (2) | 23 mi |
| AJA Energies | 4.0★ (1) | 16 mi |
| Chicago Solar Installation Experts | 1.0★ (1) | 21 mi |
| Continental Energy Solutions LLC | 5.0★ (2) | 22 mi |
| Energy Efficient Building Systems By Solarcrete | 5.0★ (2) | 19 mi |
| Evo Energy | 5.0★ (2) | 15 mi |
| Geothermal Energy Solutions, Inc. | 4.5★ (2) | 39 mi |
| Leading Solar Solutions, Inc | 5.0★ (1) | 9 mi |
| Mammoth Roofing and Solar, Alsip, IL | 4.0★ (2) | 7 mi |
| MWSLR - Midwest Solar | 5.0★ (2) | 15 mi |
| Pivot Energy | 1.0★ (1) | 20 mi |
| ProWash | 5.0★ (2) | 21 mi |
| Sintic Solutions LLC | 5.0★ (1) | 15 mi |
| Solar Service Solutions LLC | 5.0★ (2) | 30 mi |
| Solar Us Shop | 4.0★ (1) | 21 mi |
| Sunrun south chicago solutions | 1.0★ (2) | 7 mi |
| SunVest Solar LLC | 2.0★ (1) | 20 mi |
| The Chicago Solar Energy Company | 5.0★ (1) | 18 mi |
| TruLight-Solar | 3.0★ (2) | 23 mi |
| Vivint Solar Frankfort Sales Office | 1.0★ (1) | 10 mi |
How much do solar installers cost in Markham?
Typical prices in USD, adjusted for Illinois with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Solar panel installation | $26,020 | $29,430 | $32,010 | Per system: about 12 kW at about $2.60 per watt, before incentives. US national range × 0.95 East North Central factor (2025 Cost vs. Value Report) | October 2026 |
How we ranked Markham solar installers
We scored 121 Markham solar installers on 8 factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. Unknown factors are left out of the score, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Markham data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |
Solar installers in Markham: frequently asked questions
Who is the best solar installer in Markham?
By CR Score, the highest-ranked solar installer in Markham, IL is E. Scott Ostrowski: Awesome Options for Awesome People with a CR Score of 87/100. It has 5.0★ from 48 Google reviews. It is open 24/7. Solar & Energy Experts LLC (#2) and AweSun Power (#3) follow. We ranked 121 solar installers on 8 factors, last updated October 22, 2026.
How many solar installers are there in Markham?
ContractorsRanked ranks 121 solar installers serving Markham, IL. Another 20 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which solar installers in Markham are open 24/7?
14 ranked solar installers in Markham post 24/7 hours. The highest-ranked are E. Scott Ostrowski: Awesome Options for Awesome People (#1), Solar & Energy Experts LLC (#2) and AweSun Power (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which solar installers in Markham work on weekends?
72 of 121 ranked solar installers post Saturday hours and 28 post Sunday hours. The highest-ranked open Saturdays are E. Scott Ostrowski: Awesome Options for Awesome People (#1), Solar & Energy Experts LLC (#2) and AweSun Power (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does solar panel installation cost in Markham?
Solar panel installation typically costs $26,020 to $32,010, with $29,430 typical (Per system: about 12 kW at about $2.60 per watt, before incentives. US national range × 0.95 East North Central factor (2025 Cost vs. Value Report)). The range is adjusted for Illinois. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Markham solar installers have?
The median Google rating among 121 rated solar installers in Markham is 4.9★, with a median of 18 reviews. Sunrun Solar has the most, 822 reviews, and ranks #13. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank solar installers?
Each solar installer gets a 0–100 CR Score from 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do solar installers outside Markham count in this ranking?
Yes, if they are within 40 mi of the Markham city center, our service radius for solar installers. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Update log for Markham
- October 2026: CR Scores recalculated for 121 solar installers serving Markham.
- October 2026: 1 duplicate listing merged.
More solar installers and Markham pages
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